body {
    background-color: #202020;
    margin: 0;
    padding: 0;
    font: 12px/1.5 PingFangSC-Regular, Helvetica, Arial, Microsoft Yahei, sans-serif;
}
.nav{
    width: 994px;
    height: 64px;
    border: 1px solid white;
    margin: 0 auto;
    color: aliceblue;
    display: flex;
    justify-content: space-between;
}
.logo{
    width: 110px;
    height: 64px;
    border: 1px solid red;
}
.logo>img{
    width: 110px;
    height: auto;
    align-items: center;
}
.search{
    width: 700px;
    height: 64px;
    border: 1px solid red;
}